<!DOCTYPE html>
<html>
<head>
    <style>
        /* CSS styles for this page */
        .reveal * {
            display: none;
        }

        /* Children of class="reveal" are  not shown */
        .reveal *.handle {
            display: block;
        }

        /* Except for the class="handle" child */
    </style>
    <script>
        // Don't do anything until the entire document has loaded
        window.onload = function () {
            // Find all container elements with class "reveal"
            var elements = document.getElementsByClassName("reveal");
            for (var i = 0; i < elements.length; i++) {  // For each one...
                var elt = elements[i];
                // Find the "handle" element with the container
                var title = elt.getElementsByClassName("handle")[0];
                // When that element is clicked, reveal the rest of the content
                title.onclick = function () {
                    if (elt.className == "reveal") elt.className = "revealed";
                    else if (elt.className == "revealed") elt.className = "reveal";
                }
            }
        };
    </script>
</head>
<body>
<div class="reveal">
    <h1 class="handle">Click Here to Reveal Hidden Text</h1>
    <p>This paragraph is hidden. It appears when you click on the title.</p>
</div>
</body>
</html>
